A bed base for supporting a mattress wherein a side frame member 212 has a blocking element 260 attached to or extending from it at an end of the side frame member 212 wherein the blocking element 260 has a first stop surface which is transverse a longitudinal axis and a second stop surface which is perpendicular to the first surface. A support device 30 with a handle to be gripped may be provided which can engage the side frame member 212 with a clamp apart from in the region of the blocking element 260. The blocking element 260 may be a rod with distance greater than 315mm. The frame may have telescopic sections to extend its length and the blocking element 260 may be positioned on one section and either engage a guide bore on the other or be spaced such that the other section can slide under it.
